[jboss-jira] [JBoss JIRA] (DROOLS-173) Collect and accumulate conditions not working togheter

[Alvaro Pantoja (JIRA)]

Alvaro Pantoja created DROOLS-173:
-------------------------------------

             Summary: Collect and accumulate conditions not working togheter
                 Key: DROOLS-173
                 URL: https://issues.jboss.org/browse/DROOLS-173
             Project: Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
    Affects Versions: 6.0.0.Beta3
            Reporter: Alvaro Pantoja
            Assignee: Mark Proctor


Running this example:

> import java.util.ArrayList
>
> declare Item
>     code: int
>     price: int
>     present: boolean
> end
>
> rule "Init"
> when
> then
>     insert(new Item(1,40,false));
>     insert(new Item(2,40,false));
>     insert(new Item(3,40,false));
>     insert(new Item(4,40,false));
> end
>
> rule "CollectAndAccumulateRule"
> when
>     //At least two items that aren't presents
>     objList: ArrayList(size>=2) from collect( Item(present==false))
>     //Total price bigger than 100
>     price: Number(intValue>=100) from accumulate( Item($w:price, present==false), sum($w))
> then
>
>     System.out.println("Sum: "+price);
>     System.out.println("Items size: "+objList.size());
>     
>     //Look for the minor price item
>     Item min = null;
>     for(Object obj: objList){
>         if (min!=null){
>             min = (min.getPrice()>((Item)obj).getPrice())?(Item)obj:min;
>         }
>         else {
>             min = (Item)obj;
>         }
>     }
>     
>     //And make it a present
>     if (min!=null){
>         modify(min){setPresent(true)};
>     }
> end

Leads to an extra activacion and execution of rule "CollectAndAccumulateRule". It doesn't matter wich order conditions have, as long as there ara an "accumulate" and a "collect".

Expected output would be:

    Sum: 160.0
    Items size: 4
    Sum: 120.0
    Items size: 3

But is:

    Sum: 160.0
    Items size: 4
    Sum: 120.0
    Items size: 4
    Sum: 120.0
    Items size: 3

Find attached agenda and working memory log snapshot



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